Growing community of inventors

Creve Coeur, MO, United States of America

Marshall E Johns

Average Co-Inventor Count = 3.00

ph-index = 1

The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.

Forward Citations = 17

Marshall E Johns ↔ Thomas G Braga (1 patent)Marshall E Johns ↔ Keith D Strassner (1 patent)Marshall E JohnsMarshall E Johns (1 patent)Thomas G BragaThomas G Braga (11 patents)Keith D StrassnerKeith D Strassner (1 patent)
..
Inventor’s number of patents
..
Strength of working relationships

Company Filing History:

1. Petrolite Corporation (1 from 429 patents)


1 patent:

1. 4631138 - Corrosion inhibitors

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12/18/2025
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